A coupled MPM-DEM method for modelling soil-rock mixtures
文献类型：期刊论文
| 作者 | Li, Jianguo1,4; Wang, Bin1; Wang, Di1; Zhang, Pei2; Vardon, Philip. J.3 |
| 刊名 | COMPUTERS AND GEOTECHNICS
 |
| 出版日期 | 2023-08-01 |
| 卷号 | 160期号:-页码:- |
| ISSN号 | 0266-352X |
| 关键词 | Material point method Discrete element method Binary granular mixture Soil -rock mixture Triaxial test |
| 英文摘要 | Aiming at modelling the mechanical behaviour of soil-rock mixtures accurately and efficiently, a coupled MPM-DEM formulation combining the material point method (MPM) and the discrete element method (DEM) is proposed. It is solved concurrently via the contact force linking the two individual methods. Specifically, the soil is modelled with MPM as continuums to avoid handling the contacts between fine particles. The rocks are modelled by DEM to capture the contact characteristics of rocks. This method is validated with ball impacting and block sliding tests first for the contact between material points and DEM particles. Its capability in describing the mechanics of soil-rock mixtures is thereafter proved by comparing the simulation results with pure DEM simulations of binary mixtures and laboratory tests of soil-rock mixtures. It is demonstrated that MPM-DEM can reproduce the stress-strain response of soil-rock mixtures and capture the influence of rock contents and rock sizes. In addition, a coarse-graining modelling scheme is implemented, i.e., representing the soil particles with fewer material points, which significantly increases the efficiency compared with pure DEM. Our proposed method provides a novel way to model soil-rock mixtures with reasonable computational efforts, which sheds light on simulating large-scale soil-rock mixtures in nature or engineering. |
| 学科主题 | Computer Science ; Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:001006611100001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35424]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, Hubei, China 2.Key Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou 310024, Zhejiang Province, China 3.Section of Geo-Engineering, Delft University of Technology, 2628CN Delft, the Netherlands 4.University of Chinese Academy of Sciences, Beijing 100049, China |
| 推荐引用方式 GB/T 7714 | Li, Jianguo,Wang, Bin,Wang, Di,et al. A coupled MPM-DEM method for modelling soil-rock mixtures[J]. COMPUTERS AND GEOTECHNICS,2023,160(-):-. |
| APA | Li, Jianguo,Wang, Bin,Wang, Di,Zhang, Pei,&Vardon, Philip. J..(2023).A coupled MPM-DEM method for modelling soil-rock mixtures.COMPUTERS AND GEOTECHNICS,160(-),-. |
| MLA | Li, Jianguo,et al."A coupled MPM-DEM method for modelling soil-rock mixtures".COMPUTERS AND GEOTECHNICS 160.-(2023):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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